Goal-screen



(No Model.) 2 Sheets-Sheet 1.

J. J. GOYNE.

COAL SCREEN- No. 477,516. Patented June 21, 1892.

ATTORNEYS 2 Sheets-Sheet 2.

(No Model.)

J. JFGOYNE.

GOAL SCREEN.

Patented June 21, 1892.

INVENTOH: j i%% ATTORNEYS m1 mama warns co., FHOTO LIYKO., wnsummou, u.c.

lllwrrnn STATES:

PATENT ()rrrcn.

JAMES J. COYNE, OF OLD FORGE, PENNSYLVANIA.

COAL-SCREEN.

SPECIFICATION formingpart of Letters Patent NO. 477,516, dated June 21,1892.

Application filed December 22, 1891- $eria1 No. 415,841. (No model.)

To aZZ whmn it may concern.-

Be it known that I, JAMES J. COYNE, of Old Forge, in the county ofLackawanna and State of Pennsylvania, have invented a new and,

Improved Coal-Screen, of which the following is a full, clear, and exactdescription.

My invention relates to improvements in coal-screens, such as areadapted to receive coal as it comes from the breaker, and moreespecially to coal-screens which are adapted for screening anthracitecoal; and the object of my invention is to produce a simple apparatus bymeans of which the coal maybe rapidly and efficiently screened withoutregard to its condition as to moisture, and which also will brush andpolish the coal so that it will be in an excellent condition whenscreened.

To this end my invention consists of certain features of constructionand combinations of parts, which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure l is a broken vertical longitudinal section of the screenembodying my invention. Fig. 2 is an enlarged cross-section of the sameon theline 2 2 in Fig. 1, and Fig. 3 isabroken sectional plan on theline 3 3 in Fig. 1.

The screen 10 is of theusual form-that is, it is cylindrical and it maybe made up of different-sized meshes, so that different sizes of coalmay be forced through it at various points-and this screen isstrengthened by stiffening-bars 11, which extend longitudinally of thescreen, and the ends of which are secured to flanges on the gear-Wheels12, which gear-wheels form the ends of the screen, and the gear-wheelshave hubs 13, which are loosely mounted on the horizontal shaft 14,

the ends of which turn in suitable bearings 15, supported on the frame16, and the shaft has at one end a pinion 17 meshing with a pinion 18 onthe main driving-shaft 19, which shaft extends vertically at one end ofthe frame in the usual manner.

in a horizontal positionand turns loosely on the shaft, and the coal ismoved through it in the manner hereinafter described.

The screen is further supported by the ra dial arms 20, the outer endsof which are se- The screen is thus held cured to the screen, as shownat 21, and the inner ends of which are secured to hubs 22, which turnloosely on the shaft 14. and which are recessed annularly at each end,as shown at 23 24, one recess being produced exteriorly on the hub andthe other recess being produced interiorly. The hubs 13 of thegearwheels 12 are also similarly recessed, and the object of therecesses in the hubs 22 is to enable them to interlock with the collars25, which carry the brushes 26 and paddles 27,

so that no coal or culm may get beneath the bearings of the hubs orcollars, and thus be ground up to the detriment of both the coal and thebearings. The collars 25 are keyed to the shaft 14, so as to turntherewith, and the brushes 26 and paddles 27, which are carried by thecollars, are arranged so as to contact with the screen and force thecoal or culm through it. These paddles and brushes are arranged,preferably, so as to alternate, as shown best in Fig. 2, so that theywill alter nately scrape and brush, and they will carry the coal aroundthe entire surface of thescreen, so that the coal will be very'rapidlyscreened. The brushes and paddles are each hung in the same manneF-thatisto say, the ends of each brush or paddle is supported by rods 28,which are screw-threaded at their inner ends, and which enter threadedsockets 29, being held thereto by nuts 30 and set-screws 31, as shown inFig. 2, and the sockets 29 are formed on the outer ends of arms 32, theinner ends of which are secured to the collars 25, and in thisconnection it will be noticed that the collars are in two parts, havingflanges bolted together, as shown in Fig.2, so that they may be readilytaken off the shaft. It will thus be seen that the brushes and paddlesmay be arranged so that they will bear harder upon the screen at one endthan at the other-that is to say, they may be given an incline by meansof their screw connection with the 5 socket 29 and the arms 32, and, asa result, the coal may be gradually worked from one end of the screen tothe other, so that the culm and finer particles of coal will first fallthrough the liner meshes of the screen and the coarser 10o particleswill be forced through the coarser meshes, and to facilitate thecarrying forward of the coal the brushes and paddles are preferablyarranged in a spiral line, as shown in Figs. 1 and 2, so that they willact in the nature of a screw. The arms 32, which carry the brushes andpaddles, are strengthened by circular braces 33.

The screen is rotated by means of a countershaft 34, which hasgear-wheels at the ends,

which mesh with the gear-wheels 12, and it will be seen that by applyingthe power at both ends of the screen the mechanism will I not be undulystrained and the screen will be steadily revolved. If the screen is avery long one, another set of gear-wheels may be added to the middle, asshown at 35 in Fig. 1.

One end of the counter-shaft 34 is provided with a pinion 36, whichmeshes with apinion 37 on the main shaft 19, and it will thus be seenthat the screen 10 will be revolved in one direction, while the shaft 14and the paddies and brushes carried thereby will be re- 1 This envolvedin the opposite direction. ables the coal to be very rapidly andefliciently screened. The coal is fed to the screen from the breakerthrough a chute 38.

As described above, the screen revolves in one direction and the brushesand paddles in another, so that the coal will be screened and sortedand. gradually carried through the screen, and it will be seen that theentire surface of the screen Will be utilized, so that the machine willwork very fast. The screen in 3 support the screen, substantially asdescribed.

2. A screening apparatus consisting in the rotary shaft provided withseries of interlocking hubs, the central hub of each series being looseon the shaft and the two outer hubs of each series being fixed to theshaft, radial arms projecting from the loose hubs, a tubular screencarried thereby, adjustable radial arms projecting from the fixed hubs,brushes and blades connecting the outer ends of the arms of adjacentfixed disks, and means for operating the shaft and screen, substantiallyas set forth.

JAMES J. OOYNE.

YVitnesses:

JOHN J. TIMLIN, THOMAS LYNCH.

